particularly under president obama in 2009 when we tripled our forces and we decided to go after the taliban, essentially join afghanistan's civil war and nation build. the idea that we're going to be able to leave behind a self-sustaining capable afghanistan able to for a government to keep control of its territory, we're not going to be able to do it. it was a mistake to try. we won't achieve that result. essentially what we'll fall back to is what we could have years ago, a limited mission with trainers and advisers on the ground and when we have to, we'll send in special forces or drones to deal with if there are, for example, remnants of al qaeda who move back into the country. >> the president that wants to run the pentagon, chuck hagel, former senator. here was the president announcing that pick earlier this week. >> i came to admire his courage and his judgment, his willingness to speak his mind even if it wasn't popular, even if it defied the conventional wisdom, and that's exactly the spirit i want on my national security team. >> senator corker, you had some positive things to say